Actions
All four quadriceps are powerful extensors of the knee joint. They are crucial in walking, running, jumping and squatting. Because rectus femoris attaches to the ilium, it is also a flexor of the hip. This action is also crucial to walking or running as it swings the leg forward into the ensuing step. The quadriceps, specifically the vastus medialis, plays the important role of stabilizing the patella and the knee joint during gait.
Read more about this topic: Quadriceps Femoris Muscle
Famous quotes containing the word actions:
“The first step towards vice is to shroud innocent actions in mystery, and whoever likes to conceal something sooner or later has reason to conceal it.”
—Jean-Jacques Rousseau (1712–1778)
“We cannot assume the injustice of any actions which only create offense, and especially as regards religion and morals. He who utters or does anything to wound the conscience and moral sense of others, may indeed act immorally; but, so long as he is not guilty of being importunate, he violates no right.”
—Karl Wilhelm Von Humboldt (1767–1835)
“As soon as we exceed average human goodness by even a single step, our actions arouse suspicion. Virtue stands steadily “in the middle.””
—Friedrich Nietzsche (1844–1900)